Table of Contents

Team Name:

The Alfredo Robot Creaters

Team Symbol:

I. Team Members Names (First Only)

Mariah, Brianna, and Gabrielle

II. Instructions for Challenges

A. For each challenge you must write a short description of the challenge using complete sentences. Please write in 3rd person, scientific writing.
B. This is where you should include your programming code by including screen screen shots.
You should place all multimedia on photobucket.com and then incorporate it into the site using the embed code.
C. For each challenge you must provide some form of multimedia exhibit. This would be images, a short video, an interview, etc. You should place all multimedia on photobucket.com and then incorporate it into the site using the embed code.
D. For each challenge you should provide a written explanation of the difficulties encountered with the challenge.

DATE: 4/21/2009

Title of Challenge: Point Turn

A. Description (Short Paragraph):
Challenge one's purpose was to make the robot move 25 cm forward, point turn 180 degrees to the left , and then back up 10 cm. Team 23 added a sound to the third part of challenge one. The sound, "Watch out" was added when the robots backed up 10 cm.

B. Programming Code (Picture and Written Explanation):

Image1: The Programming Code

The robot worked by putting the blocks on the template. Then, it was saved and downloaded to the robot. To make the robot do challenge one, four blocks were added. The first block told the robot to move 25 cm forward. The second block instructed the robot to turn 180 degrees to the left. The third block was a sound block and told the robot to say "Watch out!" The last block told the robot to back up 10 cm.

C. Multimedia:

Video 1.Mariah explaining first try

Video 2. First attempt with the robot

D. Difficulties Encountered/How You SOLVED the Challenge! (Paragraph):
One difficulty encountered in the first challenge was the robot did a 180 degree turn to the right instead of a 180 degree turn to the left. It was fixed by moving the button on the NXT software the opposite way to make the robot turn to the left. Another error was that the robot turned to the left 180 degrees, but didn't stop in the right place. We fixed it by increasing the amount of degrees the robot turned. Overall, challenge one didn't have crucial errors.

DATE: 4/23/2009

Title of Challenge: Square Challange

A. Description (Short Paragraph):
The purpose of this challenge was to have the robot, Alfredo, turn left 3 times and go straight 4 times in the shape of a square. Team 23 had to adjust the power and duration.

Blocks were placed on the template to help the robots move and have different movements. When the robot went straight, the duration was three seconds and the power was 54. Each time the robot went straight; it was put on the same duration and power. As the robot turned left each time, the power was 48 and the duration was 180 degrees.

C. Multimedia:

Video 3: Brianna Robot Interview

D. Difficulties Encountered/How You SOLVED the Challenge! (Paragraph):
Team 23 encountered various errors in this challenge, first the robot wouldn't go far enough and the turns were inaccurate. This problem was solved by increasing the power and having the durtation for a longer period of time. Another problem that was encountered was the robot made a right turn instead of a left turn. Team 23 solved this problem by modifying the steering of the robot and dragged the button to the direction that was necessary.

DATE: 4/24/2009

Title of Challenge: Backing up

A. Description (Short Paragraph):
The robot moved straight forward and then turned right. Then, it backed up with a warning sound. The turn was almost 90 degrees. There were two turns since the robot needed to get in the right direction with the tape. Lastly, backing up was just for a couple of seconds.

The first block was to go straight for 3 seconds. The second block told the robot to turn a little. The third block instructed the robot to turn again in the same direction. The forth block told the robot to keep going forward. The fifth block instructed the robot to say Ahhno, while the robot backed up. The sixth block told the robot to back up for about 3 seconds also.

The difficulty that was encountered occurred when the robot changed directions. Sometimes, the robot turned too much, but then it turned too little. Hence, a balance could not be found. The challenge was solved by reating two turns in the same direction. The first turn was almost 90 degrees. Then, the second turn was a little bit over 90 degrees and the perfect turn was made.
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DATE: 5/6/2009

Title of Challenge: Free Challange four

A. Description (Short Paragraph):
The challenge for challenge four was to create a obstacle course with the blue tape and correct measurrments. The obstacle course had to contain with three different turns. There also had to be one sound sensor and one light sensor.

There were various errors in this experiment. For example, the robot keep turning in circles when we only needed one turn. THe problem was solved by taking out the 360 degree turn. Also, another problem was the sound sensor. One day the sensor would work and the next if wouldn't. It was fixed by checking the port that the cord was pluged into to make the sensor work. The last problem was that the experiment wasn't finished. It wasn't finished because the turn was never perfected so that it follows the blue tape. Overall, there were many errors unlike the other challenges.